NYPA FACTS CSC System Subhashish Bhattacharya Dr. BruceFardanesh, NYPA Students: Babak Parkhideh, Zhengping Xi Saman Babaei North Carolina State University FACTS and HVDC User Meeting
Outline VSC based FACTS Control System Structure and Convertible Static Compensator (CSC) Control System Overview CSC Configurations and Control Modes Control boards FACTS Simulator (TNA) testing and Control HIL (Hardware-in-the-loop) control testing Control system upgrade plan Other potential FACTS sites AEP, TVA, KEPCO, PG&E, SMI/CMC steel 2
Convertible Static Compensator (CSC) - Marcy Substation FACTS Increase power transfer by total of 240MW by CSC 3
Convertible Static Compensator (CSC) - Marcy Substation FACTS Volney AT1 AT2 Marcy 345kV SC is 18,000 MVA M arcy 345 kv North Bus There are 11 possible configurations M arcy 345 kv South Bus Edic HSB TR - SE2 100 M VA HSB New Scotland (UNS) Coopers Corners (U C C ) STATCOM TR - SH 200 M VA LVCB TR - SE1 100 M VA LVCB HVCB SSSC TBS1 TBS2 UPFC IPFC SW DC INVERTER 1 100 M VA DC Bus 1 DC Bus 2 INVERTER 2 100 M VA 4
Convertible Static Compensator (CSC) - Marcy Substation FACTS The inverters can operate independently or together with the DC bus switch closed CSC has 11 configurations STATCOM SSSC UPFC IPFC On the fly transitions 5
FACTS Convertible Static Compensator (CSC) - Marcy Substation 6 6
FACTS Convertible Static Compensator (CSC) Inverter Hall 7
Objectives FACTS Control System upgrade 8 VSC FACTS sites 1 NYPA, 1 TVA, 3 AEP, 1 PG&E, 1 KEPCO, 1 SMI/CMC steel Control system upgrade to a commercial controls platform - Life extension of these FACTS projects Migration and validation of existing controls on a standard simulator (RTDS) platform Development of RTDS Simulator (TNA) for any FACTS controls and Control HIL (Hardware-in-the-loop) testing Provide platform for evaluation of FACTS controllers for system study and planning tool Development, upgrade and testing of HMI tool 8
FACTS 7 TH FACTS User s Group Meeting, Austin, TX, Nov. 3-5, 2004 9 NYPA CSC Controls Provide Different Modes For Each Power Circuit Configuration I line1 V bus I line2 V line1 V line2 I inv1 E 1 INVERTER NO.1 INVERTER V dc1 V dc2 NO. 2 E 2 I inv2 E 1 reference E 2 reference CONFIGURATION/MODE SELECTOR CONFIGURATION/MODE SELECTOR STATCOM CONTROL SSSC CONTROL UPFC SERIES INV. CONTROL IPFC CONTROL STATCOM CONTROL SSSC CONTROL UPFC SERIES INV. CONTROL IPFC CONTROL VOLTAGE CONTROL MODE VAR CONTROL MODE REACTIVE VOLTAGE INJECTION MODE AUTOMATIC POWER FLOW CONTROL MODE VOLTAGE INJECTION MODE AUTOMA TIC POWER FLOW CONTROL MODE PRIMA RY CONTROL MODE REACTIVE VOLTAGE INJECTION MODE VOLTAGE CONTROL MODE VAR CONTROL MODE REACTIVE VOLTAGE INJECTION MODE AUTOMATIC POWER FLOW CONTROL MODE VOLTAGE INJECTION MODE AUTOMA TIC POWER FLOW CONTROL MODE PRIMA RY CONTROL MODE REACTIVE VOLTAGE INJECTION MODE Vbus reference Var reference Slope factor VAR reserve level V bus I inv1 V dc1 V inject reference P line1 reference V dc1 I line1 V line1 V inject reference P,Q line1 ref erence V dc1 I line1 V line1 V bus V inject reference Vbus reference P,Q line1 reference Var reference V Slope factor dc1 I line1 VAR reserve level V line1 V bus Vbus Iinv2 Vdc2 V inject reference P line2 ref erence V dc2 I line2 V line2 V inject reference P,Q line2 ref erence V dc2 I line2 V line2 V bus V inject reference P,Q line2 reference V dc2 I line2 V line2 V bus
Central Controls Comm. with VSC Poles Optical Fibers 10
FACTS Controls Upgrade Plan Phase I: Develop a RTDS based digital TNA simulator for a variety of VSC-based FACTS controller platforms. The NYPA CSC system will be used to test the simulator. Develop PSCAD based detailed simulation of the ac system, VSC converter topology, controls (exacting as implemented in the field) Include VSC and system level protection, switchyard devices with open/close timing Verify developed model with commissioning test results and TNA test results 11
FACTS Controls Upgrade Plan Phase II: RTDS hardware and CSC system and controller setup on the RTDS simulator system Verification of the FACTS controller models on the RTDS system results with TNA results and CSC commissioning test results Evaluation of the possible interface of the HMI Genesis with the CSC system on RTDS Phase III: Control system upgrade to a commercial controls platform To provide a testbed for hardware-in-the-loop (HIL) testing and verification of a commercial vendor control system for CSC/FACTS system 12
Control TNA Studies Thoroughly test and validate control system Steady state characteristics Response to control set point changes Behavior during system transients Protective functions 11 possible equipment configurations Various inverter control modes in each configuration Different fault types/locations Peak and light system load conditions 13
TNA NYPA CSC TNA Model Inverter models Actual control boards Transformer models Operator Interface (AC network simulator not shown)
TNA NYPA CSC TNA Model 15
TNA NYPA CSC STATCOM response to line-gnd fault
NYPA CSC Converter Waveform Analysis with MATLAB Phase A Conv 1 Phase A Conv 2 Phase A Conv 3 Phase A Conv 4 Construction of 48 pulse voltage based on NYPA converters concept in MATLAB. (the voltage amplitude is not the same as NYPA and only wave construction has been considered.) Line to line voltage Phase voltage Confidential DocumentS.Bhattacharya 17
CSC Converter System performance in PSCAD 48 pulse Line to line Voltage 48 pulse Phase to neutral Voltage
CSC Converter System in RSCAD / RTDS 19
24-pulse STATCOM in RSCAD / RTDS Converter System
Angle control (Iq control) STATCOM in RSCAD / RTDS 21
STATCOM with Angle Control Results in RTDS Iq: 0 pu 0.8 pu Iq: 0 pu -0.8 pu 100 S1) N1 S1) N2 S1) N3 100 S1) N1 S1) N2 S1) N3 50 50 kv 0 kv 0-50 -50-100 20 10 Vin1 Vin2 Vin3-100 30 20 10 Vin1 Vin2 Vin3 0-10 0-10 -20-20 1 IAP IBP ICP -30 1 IAP IBP ICP 0.5 0.5 ka 0 ka 0-0.5-0.5-1 0.01734 0.02653 0.03572 0.0449 0.05409 0.06328 0.07247-1 0.0173401734 0.0265302653 0.0357203572 0.04490449 0.0540905409 0.0632806328 0.0724707247 22
STATCOM with Angle Control Results in RTDS Iq: -0.8 pu 0.8 pu Iq: 0.8 pu -0.8 pu 100 S1) N1 S1) N2 S1) N3 100 S1) N1 S1) N2 S1) N3 50 50 kv 0 kv 0-50 -50 ka -100 Vin1 Vin2 Vin3 20 10 0-10 -20-30 IAP IBP ICP 1 0.66667 0.33333 0-0.33333-0.66667-1 0.018018 0.0274702747 0.0369303693 0.04640464 0.0558605586 0.0653206532 0.0747907479 ka -100 Vin1 Vin2 Vin3 30 20 10 0-10 -20 IAP IBP ICP 1 0.5 0-0.5-1 0.01734 0.02653 0.03572 0.0449 0.05409 0.06328 0.07247 23
Instantaneous PLL (IPLL) in RTDS IPLL based on instantaneous voltage IPLL in RTDS 24
STATCOM w/ SLG fault in RTDS 100 S1) N1 S1) N2 S1) N3 50 kv 0 ka -50-100 Vin1 Vin2 Vin3 30 20 10 0-10 -20-30 IAP IBP ICP 2 1.33333 0.66667 0-0.66667-1.33333-2 0 0.03333 0.06667 0.1 0.13333 0.16667 0.2 25
CSC Converter System RSCAD and PSCAD results STATCOM performance when 40 MVAr reactive power is injected to the bus Injected reactive power to the bus and reference reactive power simulated by PSCAD 26
Controller performance in PSCAD and RSCAD Injected reactive power to the bus after flipping the switch from 0.4pu to -0.4pu. Injected reactive power to the bus after flipping the switch from -0.4 pu to 0.4pu.
Comparison between Field and RSCAD results
Controllable real power range 255 MW UPFC on UNS Comparison of field test & simulation UPFC with shunt inverter at 100% capacitive output of 100 MVAR 150 100 Field test Simulation Controllable reactive power range 275 MVAR Q (M MVAr) 50 0-50 Line real power increased by 25% -100-150 -200 350 400 450 500 550 600 650 P (MW)
Thanks! 30
CSC 345 kv, 100 MVA Series Transformer
CSC 345 kv, 200 MVA Shunt Transformer
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